Captive screw



FIG. 1 is a top plan view of the captive screw showing our new design;

FIG. 2 is a side elevation thereof, the remaining sides being identical;

FIG. 3 is a perspective view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view of the captive screw showing a second embodiment of our new design;

FIG. 6 is a side elevation thereof, the remaining sides being identical;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a captive screw, as shown and described. 